This is a brand new Dell Precision 15-5510 extended run laptop battery. This battery fits the same machines as the Dell p5510 battery, however, the battery is twice as wide. This is an internal battery. If you have 2 hard drives in your laptop, you may not have room for this larger capacity battery.

All our products carry a full 2 Year warranty and every battery is charged and tested before it ships. We provide a 30-day money back guarantee if you are not completely satisfied. We are so confident in the quality of our batteries, we will pay for any and all shipping expenses if our product fails to perform in the first 30 days you have our battery, even if it is not our fault.

You can expect up to 8-9 hours of run time with this Dell 15-5510 battery when new, depending on your energy use.